Profile system for producing corner formations in dry construction

ABSTRACT

The invention relates to a profile system for producing corner formations in dry construction, comprising a fastening profile ( 4 ) and a cover profile ( 5 ) that can be attached to the fastening profile ( 4 ) in order to form a corner of a room. A simple configuration and a secure application is achieved in such a way that the two profile sections ( 6, 7 ) can be swiveled against each other by a first hinge ( 8 ) about an axis parallel to the longitudinal axis of the profiles ( 4, 5 ) and that the two profile sections ( 6, 7 ) of the fastening profile ( 4 ) comprise receptacles ( 9, 10 ) for the cover profile ( 5 ) which can be inserted into the fastening profile ( 4 ) in the manner of a snap-in connection.

BACKGROUND OF THE INVENTION

The invention relates to a profile system for producing cornerformations in dry construction, comprising a fastening profile whichconsists of two profile sections and a cover profile that can beattached to the fastening profile in order to form a corner of a room.

The formation of corners of rooms in dry construction is a problem thatis currently not completely solved in a satisfactory manner. It iscommon practice for example to lay building boards such as gypsumplasterboards or fibrous plasterboards up to the area of the corner ofthe room and to trowel the remaining gap with filling material. Cornerprofiles can be used optionally in order to avoid the likelihood offormation of fissures. In any case, the production of an accurately madecorner of a room causes a relatively high amount of work. Moreover, theaccurate performance requires a respective amount of expert knowledgeand experience.

DESCRIPTION OF THE PRIOR ART

Solutions are further known in which the building boards abutting thecorner of the room are inserted into profiles which have a bending edge.The production of a corner of a room with such systems requires a highamount of work because as a rule the coupling is required already duringthe laying of the building boards. Solutions of the kind mentioned abovehave already been described for example in DE 31 38 380 A, EP 0 849 415B or DE 94 09 351 U.

U.S. Pat. No. 1,772,417 A discloses a profile system for producingcorner formations in dry construction. Said profile system consists of afastening profile and a cover profile which can be attached to thefastening profile. Both profiles consist of two profile sections eachwhich are mutually swivellable in the manner of a hinge. As a result ofthe constructive configuration, such a corner formation is relativelycomplex to produce. Furthermore, a profile system is known from U.S.Pat. No. 5,459,969 A which is also suitable for dry construction. As inthe solutions described above, laying is very difficult because of thecoupling of the adjacent building boards.

SUMMARY OF THE INVENTION

It is the object of the present invention to provide a solution whichcan be produced in an easy and cost-effective way, with such solutionplacing low requirements on expert knowledge, skill and experience ofthe persons producing the corner connection. In particular, the cornerconnection shall be producible in the manner that the building boardsare laid at first up to the area of the corners of the rooms and theformation of the corner is made thereafter. Preferably, the demands madeon precision during the laying of the building boards should be as lowas possible, so that there is a tolerance relative to the differentdistances of the edges of the building boards from the corner of theroom. It is a further object of the invention to provide a system whichsubstantially compensates any imprecision and irregularities of thefurring and also allows lining the corners of rooms which are notaligned in a precisely rectangular manner.

It is provided in accordance with the invention that the two profilesections can be swivelled against each other by a first hinge about anaxis parallel to the longitudinal axis of the profiles and that the twoprofile sections of the fastening profile comprise receptacles for thecover profile which can be inserted into the fastening profile in themanner of a snap-in connection.

The relevant aspect of the invention is that the fastening profileadjusts automatically to the corner of the room, so that for fasteningthe cover profile a predetermined geometrical situation is obtained evenwhen there is imprecision, be it by imperfect furring or improperprocessing. The system in accordance with the invention allows liningnot only inside corners, but also outside corners, and, in the case of arespective configuration, also corners which do not form a right angle.The building boards are finally laid prior to the production of thecorner connection. Only very low requirements are placed on the qualityof the corner facing the corner of the room and its distance to theedge.

An especially easy kind of laying can be obtained in such a way that thetwo profile sections of the fastening profile comprise receptacles forthe cover profile which can be inserted into the fastening profile inthe manner of a snap-in connection. This allows correcting any defectsbefore the corner connection is completed.

It has proven to be especially advantageous in this connection when thereceptacles of the two profile sections of the fastening profile arearranged as grooves with a dovetail-shaped cross section. A simplearrangement can thus be combined with especially easy processing.

An especially simple solution is achieved in such a way that the firsthinge is arranged as a film hinge. It is thus especially possible thatthe fastening profile consists of an integrally made PVC profile. Thisoffers the possibility to extrude the profile in a cost-effective way.The same applies to the cover profile.

A further especially preferred embodiment of the invention provides thatthe cover profile consists of two cover strips which are connected witheach other in a swivellable manner by a second hinge. In conjunctionwith an integrally arranged fastening profile, a system can thus beproduced which merely consists of two simply arranged components.

Within the terms of an especially simple arrangement of the coverprofile it is also appropriate here too that the second hinge isarranged as a film hinge.

An especially high tolerance against imprecision in the laying of thebuilding boards is achieved in such a way that the cover strips of thecover profile each comprise a cover tongue which is provided to cover anadjacent building board.

The laying and processing of the system in accordance with the inventionis substantially facilitated in such a way that a heat-sealing strip isprovided on the rear side of the cover tongue. The connection with thebuilding boards can thus be produced in the manner of a trimming strip.The possibility is further advantageous to make corrections prior to thefinal laying which is made by the activation of the heat-sealing stripif the result of the work is unsatisfactory. In this respect it is alsoadvantageous when the cover profile comprises latching elements whichcan be brought into detachable engagement with the fastening profile.

The cover profile is preferably laminated with paper. The same materialas in the gypsum plasterboards can be used here. The same base is thusavailable for painting, so that no special measures need to be taken foravoiding differences in colour.

It is especially advantageous when there is a slight amount of playbetween the fastening profile and the cover profile. This play allowscompensating changes in length in the gypsum plasterboards which arecaused thermally or by changes in the humidity of the air.

An especially cost-effective solution provides that the latchingelements are arranged as PVC profiles.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is now explained in closer detail by reference toembodiments shown in the drawings. FIGS. 1, 2 and 3 show sectional viewsof different embodiments.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The brickwork or other ground on which the corner formation inaccordance with the invention is produced is generally designated withreference numeral 1. Building boards 2, 3 which are arranged as gypsumplasterboards for example are rigidly fastened to the ground, withsufficient distance to the corner being maintained. A fastening profile4 is fastened to the ground 1 between said intermediate space, whichprofile consists of two profile sections 6, 7 which can be pivotedagainst each other by a first hinge 8 about an axis parallel to thelongitudinal axis of profile 4. The first hinge 8 is arranged as a filmhinge, i.e. this concerns a thinning of a material which allows thepivoting movement which is necessary for producing the position as shownin FIG. 1.

Receptacles 9, 10 are arranged in the two profile sections 6, 7, whichreceptacles each have the shape of a dovetail-like groove. Hollowchambers 11 for reducing the material input are arranged beneath thegrooves 9, 10.

Latching elements 12, 13 of a cover profile 5 can be inserted in the tworeceptacles 9, 10, which latching elements have a cross section which isadjusted to the dovetail-shaped cross section of the grooves 9, 10 andwhich is rounded off in the corners in order to facilitate theinsertion. Receptacles 14, 15 in the latching elements 12, 13 are usedfor receiving screws (not shown) with which the fastening profile 4 canbe fastened to the ground 1.

The two latching elements 12, 13 are part of two cover strips 17, 18which are connected by a second hinge 16 with each other, which is alsoformed by a thinning of material. On the side remote from the secondhinge 16, two cover tongues 19, 20 protrude from the two cover strips17, 18 which are provided to overlap the building boards 2, 3 in theedge region.

The embodiment of FIG. 2 differs from that of FIG. 1 mainly in such away that the first hinge 8 rests in the assembled state directly on thesecond hinge 16, which thus ensures that even considerable deviationsfrom the right angle can be tolerated easily. Moreover, the snap-inconnection between the fastening profile 4 and the cover profile 5 issolved from a geometrical standpoint in an alternative manner in theembodiment shown here.

The embodiment of FIG. 3 shows the case of a convex corner of a room,i.e. a corner that protrudes inwardly. The first hinge 8 is arrangeddirectly on the edge of the wall in the assembled state. The secondhinge 16 forms the final edge, with material accumulations 21, 22 beingprovided for mechanically strengthening the edge, which accumulationspartly or completely fill the cavity 23 in the region of the edge. Theembodiment of FIG. 3 also shows bores 24, 25 for receiving fasteningscrews which are not shown.

The embodiments as shown above each comprise an integrally arrangedfastening profile 4 and an integrally arranged cover profile 5 which areboth extruded from PVC.

The present invention allows producing the corner formation in dryconstruction in appealing design, true to dimension and at low cost.

1. A profile system for producing corner formations in dry construction,comprising a fastening profile (4) which consists of two profilesections (6, 7) and a cover profile (5) that can be attached to thefastening profile (4) in order to form a corner of a room, wherein thetwo profile sections (6, 7) can be swiveled against each other by afirst hinge (8) about an axis parallel to the longitudinal axis of theprofiles (4, 5) and the two profile sections (6, 7) of the fasteningprofile (4) comprise receptacles (9, 10) for the cover profile (5) whichcan be inserted into the fastening profile (4) in the manner of asnap-in connection.
 2. A profile system according to claim 1, whereinthe receptacles (9, 10) of the two profile sections (6, 7) of thefastening profile (4) are arranged as grooves with a dovetail-shapedcross section.
 3. A profile system according to one of the claims 1 or2, wherein the cover profile (5) consists of two cover strips (17, 18)which are connected with each other in a swivelable manner by a secondhinge (16).
 4. A profile system according to one of the claims 1 to 3,wherein the first hinge (8) and/or the second hinge (16) is/are arrangedas a film hinge.
 5. A profile system according to one of the claims 1 or4, wherein the cover strips (17, 18) of the cover profile (5) eachcomprise a cover tongue (19, 20) which is provided to cover an adjacentbuilding board (2, 3).
 6. A profile system according to claim 5, whereinone heat-sealing strip each is provided on the rear side of the covertongues (17, 18).
 7. A profile system according to one of the claims 1to 6, wherein the cover profile (5) comprises latching elements (12, 13)which can be brought into detachable engagement with the fasteningprofile (4).
 8. A profile system according to claim 7, wherein thelatching elements (12, 13) are arranged as PVC profiles or parts of PVCprofiles.
 9. A profile system according to one of the claims 1 to 8,wherein the fastening profile (4) consists of an integrally arranged PVCprofile.
 10. A profile system according to one of the claims 1 to 9,wherein the cover profile (5) consists of an integrally arranged PVCprofile.
 11. A profile system according to one of the claims 1 to 10,wherein the cover profile (5) is laminated with paper.
 12. A profilesystem according to one of the claims 1 to 11, wherein there is a slightplay between the fastening profile (4) and the cover profile (5).